Regarding the Huth Fastener Flexibility equation (1) in the ASTM STP 927 paper, has anyone been able to reproduce the results shown in Fig. 15? Specifically, the top plot labelled 'A' which applies to the double shear specimen. I'm using Eqn. 1 for doubler shear (n = 2) with the specimen geometry shown in Fig. 12, and I'm calculating a first fastener pin-fraction 0.306, while Fig. 15 shows about 0.230. I have good correlation to the Fig. 15 results for the single shear specimen, but I'm way off for the double shear. I'm aware of the typo in Eqn. 1 in the STP paper, and am using the corrected third term (ie. 1/(2t1Ef) instead of 1/(nt1Ef)). Any suggestions would be appreciated.
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